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Bicycle Parts For Sale By Owner in Boulder, CO

  1. see also
  2. Selle Italia X-LR Kit Carbonio Superflow, Saddle, 268 x 140mm, 138g, B
    $120
    Boulder
  3. 3 wheels (26", 700c), 3 tires (26", 27"): Shimano Deore XT / LX, Mavic
    $5
  4. bike parts: hand pumps, cassette, stem, seatposts, crankset, pedals
    $5
  5. 🚵‍♂️ Diamondback 27.5” MTB Wheelset – Front + Rear – Ready to Rid
    $105
    Longmont
  6. NEW! BOA Cycling Shoes
    $60
    Longmont
  7. Thule 2-Bike Hitch Rack for 2” or 1 1/4" Hitch Receiver
    $280
    Louisville
  8. (2) NEW IN BOX! Yakima LockJaw Rooftop Bike Trays
    $100
    Longmont
  9. NEW with tag! Pearl Izumi Elite Women's Drop Tail Cycling Bibs - SMALL
    $100
    Longmont
  10. Pearl Izumi Cycling Shoes - sz 45.5
    $30
    Longmont
  11. $200 Rudy Project Airstorm Cycling Helmet
    $75
    SW Longmont
  12. Schwinn Original grips 2 Pair
    $40
  13. Continental Trainer tires Pair + Tube
    $40
  14. Vintage Look Sunlit Headlamp
    $20
  15. Schwinn Approved Generator Light/ Odometer
    $50
  16. Like New Yakima 2-Bike Hitch Rack for 1-1/4” Hitch Receiver
    $260
    Louisville
  17. Yakima Bike Rack
    $90
    Longmont
  18. Air tire pump
    $15
    Boulder
  19. Yakima 2-Bike Hitch Rack for 2” Hitch Receiver
    $200
    Louisville
  20. Shimano Dynalast Shoe
    $250
    Erie
  21. LOOK KEO Road Cleats Bicycle Pedal Red
    $10
    Boulder
  22. 29" alluminum front rim
    $20
    Boulder
  23. CrankBrothers Highline 7 Dropper Post, 100mm, 31.6 Dropper Seatpost
    $40
    Boulder
  24. NEW Mountain Bike Shoes - size EUR 41
    $40
    Longmont
  25. (2) NEW Mt Bike Tires - 26" x 1.90"
    $40
    Longmont
  26. Ortlieb Back Roller Classic
    $50
    Boulder
  27. Ride Concepts Wildcat Mid flat pedal shoes size 12
    $50
    Boulder
  28. DEAN Torreys titanium gravel frame 61 cm
    $1,000
    Boulder
  29. All City Super Professional steel fork
    $80
    Boulder
  30. Ritchey WCS Trail Saddle
    $30
    Boulder
  31. Carbon fiber race rim 29"
    $40
    Boulder
  32. Ibis Ripmo AF Frame & Marzocchi Z1 Fork
    $1,000
    Louisville
  33. Shimano BR MC 70 Deer Head Cantilever Brakes
    $35
    Erie
  34. Easton/Raceface ARC 30 Rims
    $60
    Erie
  35. Thule Wheel On wheel carrier
    $35
    Erie
  36. Yakima Freeloader
    $80
    Erie
  37. Silca Pista pump
    $35
    Erie
  38. saddle bags basket
    $40
    Longmont
  39. Bicycle Rack
    $100
    Lafayette
  40. E-Bike Loading RAMP + License Plate Relocation Bracket
    $75
    Longmont
  41. GORE Bike Wear Gore-Tex Shoe Covers
    $50
    Longmont
  42. Cycling wheels Fixey DT Swiss Shimano XT single speed Suntour
    $1
    Longmont
  43. Evolution of Bicycles poster
    $15
    Table Mesa
  44. Bike parts for sale (easton, whiskey, specialized, sram)
    $1
  45. ITM Aluminum Road Bike Drop Bar Handlebar
    $40
    Boulder
  46. Yakima King Joe 3 Car Bicycle Rack - Like New
    $85
    Frederick
  47. Specialized S Works Carbon 175mm 52/36 11-speed BB30 crankset
    $250
  48. SRAM XX1 Eagle DUB Crankset 175mm
    $300
    Louisville
  49. Nashbar Angliru Road Bike Pedals (Black)
    $20
    Boulder
  50. Ultegra crankset
    $80
    Erie
  51. Bike Shoes - Men's/Women's
    $40
    Longmont
  52. Yakima 2-Bike Hitch Reck for 2” Hitch Reciever
    $260
    Louisville
  53. Kurt Kinetic Road Machine Fluid Stationary Bike Trainer
    $50
    Boulder
  54. Shimano 10 speed freewheel.New.
    $20
    Firestone
  55. Suspension Seat Post
    $25
  56. Shimano 6700 crank set 172.5
    $100
  57. Reynolds Carbon Road Fork 11/8
    $100
    Lafayette
  58. Assos Mercedes AMG Petronas Full-length Sleeve Jersey (White) - Small
    $49
    Boulder
  59. Garmin Edge 830 Cyling Computer
    $199
    Boulder
  60. Vintage 1993 Trek USA Bike Rear Rack & Blackburn Rack Strap
    $48
    Longmont
  61. Vintage 1992 Giant Bike Expandable Accessory Bag
    $10
    Longmont
  62. Vintage USA Concord Bicycle Replacement Tube, Unused - 26 x 1.5
    $4
    Longmont
  63. Dual battery ebike conversion kit
    $500
    Boulder
  64. New! 26" Street Tires
    $30
    Longmont
  65. ENVE SES 3.4 AR Disc Wheels New
    $1,800
    S Boulder
  66. New Niner bicycle saddle with CN/Ti rails
    $15
    Boulder
  67. Carbon 650b wheelset: LB rims + i9 hubs + Sapim spokes
    $650
    Boulder
  68. 650b x 48mm Panaracer Gravelking SS tires
    $50
    Boulder
  69. Bike pump with charge cylinder
    $40
    Boulder
  70. Bash guard ISCG05
    $75
    Holiday park
  71. Ibex BOB trailer
    $250
    Boulder
  72. New Set Hutchinson Black Mamba CX Pro Tubeless Tires-700x34
    $50
    Louisville
  73. New Shimano Ultegra ST-6800-11 Speed Brake Hood Covers
    $15
    Louisville, CO
  74. New Forte/FSA Pro Carbon Fiber Drop Handlebars-44cm-31.8
    $50
    Louisville
  75. New Set Hutchinson Fusion 5 All Season Tubeless Road Tires-700x28
    $50
    Louisville
  76. New Set Hutchinson Sector 28 Tubeless Road Tires-700x28
    $60
    Louisville
  77. New Set of Schwalbe P X-One Tubeless Cyclocross/Gravel Tires-700x33
    $60
    Louisville
  78. New Fizik Pave' Saddle-Titanium Rails
    $40
    Louisville, CO
  79. Locking bike rack for car hitch (1.25 or 2 inch) with MTB tension bar
    $65
    Longmont
  80. Racermate CompuTrainer Pro - Bike Trainer System
    $150
    Longmont
  81. Simonetti Aero Aluminum Bike Frame
    $150
    Longmont
  82. Campagnolo Chorus 10 speed group set
    $500
    Boulder
  83. Küat NA22G 2.0 Two Bike Add-On
    $350
    Boulder
  84. RockyMount Roof Bike Rack
    $25
    Boulder
  85. Bike Project: Steel Bike Frame with parts
    $20
    Longmont
  86. Alugear 44t oval 107bcd 1-by chainring
    $20
    Boulder
  87. AbsoluteBlack 52/36 oval 5-bolt chainrings
    $30
    Boulder
  88. SRAM Red22 GXP 110bcd 172.5mm crankset w/ 4iiii PM
    $200
    Boulder
  89. Trek/Bontrager carbon seatmast 135mm 20mm Offset
    $30
    Boulder
  90. Fizik Vento Argo 00 saddle 140mm
    $90
    Boulder
  91. 2024 Vivid Air Ultimate 250x75
    $550
    rollinsville
  92. Sram Level SLV Brake set
    $200
    rollinsville
  93. 2023 Rock Shox Super Deluxe Ultimate RC2T trunnion mount
    $400
    rollinsville
  94. Prologo Bike Saddle
    $50
    Boulder
  95. Cannondale Scalpel SI carbon triangle
    $100
    Boulder
  96. Bike Helmets - men's, women's - 5 available
    $0
    Longmont
  97. Biking Clothes - Men's S,M,L
    $0
    Longmont
  98. NEW! Cycling Shoes with BOA
    $60
    Longmont
  99. Bontrager Carbon Cycling Shoes with eSoles - sz 45
    $75
    Longmont
  100. QR Beam Rack MTX seat post rack
    $30
    Boulder
  101. Women's Giro Reva Mountain bike shoes - EU 39 - LIKE NEW
    $50
    Longmont
  102. NEW Mountain Bike shoes Size 9.5 US / 43
    $50
    Boulder
  103. Rapha Lightweight Short-Sleeved Cycling Jersey (Mens Medium)
    $50
    Boulder
  104. 29” Raceface ar 35 12x157thru axle. XD driver novatec hub 6 bolt
    $165
  105. SR Suntour XCR34 29" Fork
    $50
    Lafayette
  106. Louis Garneau Ergo Air Carbon Cycling Shoes - size EU 42
    $60
    Longmont
  107. Women's Mt Bike Shorts - NEW with Tags
    $40
    Longmont
  108. NEW! Mountain Bike Shoes, SPD - EU 40
    $30
    Longmont
  109. Mountain bike helmet barley used
    $25
    Lafayette
  110. Yakima Fullback 3-bike trunk rack
    $50
    Gunbarrel/Niwot
  111. Shimano Ultegra FC-R8100 165mm Left Crankarm
    $40
    Gunbarrel/Niwot
  112. Dura Ace 10 spd rim brake groupset
    $400
    Lafayette
  113. Fulcrum 5 racing wheel set
    $150
    Lafayette
  114. Specialized Globe Pannier Adapters - Front
    $50
    South Boulder
  115. Thule 822 Bed Rider Truck Bike Mount Aluminium
    $60
    South Boulder
  116. Yakima Track Rail Bicycle Tray Carrier for Rooftop Racks 🚴
    $50
    South Boulder
  117. Shimano SPD-SL pedals
    $50
    Boulder
  118. Water Bottle Carrier - Profile Design RML
    $30
    Boulder
  119. Winter bike tires
    $15
    South Boulder
  120. Industry Nine GRCX Gravel Wheelset, Like New
    $450
    North Boulder
  121. Campagnolo Tool Set
    $4,750
    S Boulder
  122. 3T Stem 120mm
    $24
    S Boulder
  123. Road /Gravel Pair of Wheels New Disc Brake
    $195
    S Boulder
  124. Nice aluminum 700c rims - per pair
    $25
    Longmont
  125. Road and mountain stems
    $25
    Longmont, near YMCA
  126. Carbon seatpost 31.6
    $35
    Longmont, near YMCA
  127. Surly Nate fat tires 26x3.8
    $45
    Longmont
  128. Medium Front Basket For Rad Power Bikes
    $25
    Boulder
  129. Mapei Socks- Defeet
    $20
    S Boulder
  130. Gravel Shoes size 10.5
    $60
    S Boulder
  131. Selle Italia Flite Saddle - Giro d'Italia Special Edition- NIB
    $95
    S Boulder
  132. 700x25 Tubeless Tires Mavic
    $25
    S Boulder
  133. NOS Campagnolo C Record Rear Hub 32h
    $120
    S Boulder
  134. Bike Rack
    $50
    Longmont
  135. E-Bike Electric Motor Adapter Kit
    $395
    Lafayette
  136. Burley D'Lite
    $599
    Lafayette
  137. 3T Carbon Handlebar, Stem, Seatpost w Olympic Graphics
    $395
    S Boulder
  138. SteadyRack Fat Bike Hanging Racks - 1 or 2 For Sale
    $55
    Boulder
  139. Shimano Tsukinist Commuter Backpack Cycling 20L
    $65
    Boulder
  140. Shimano Dura-Ace C24 Carbon Clincher wheelset
    $450
    Boulder
  141. Shimano XT Cranks
    $110
    Boulder
  142. SARIS Bones Trunk Bike Rack
    $50
    Longmont
  143. Bike Holder for Water Bottle - Schwinn brand
    $5
    louisville
  144. CycleOps Trainer + Front Wheel Block
    $25
    Boulder
  145. Shimano Saint PD-MX80 Pedals
    $50
    Broomfield
  146. Surly Bill Long Trailer
    $750
    Colorado Springs
  147. Hitch Mount Bicycle Carrier
    $40
    North Boulder Area
  148. Kryptonite Evolution 1090 Integrated Chain Lock
    $80
  149. Surly Knard Tires
    $20
    Broomfield
  150. womans Specialized Road bike shoes, new
    $45
    south boulder
  151. Yakima 4 bike hitch rack
    $80
    Boulder
  152. GT 2x4 Forks and Flip Flop Stem
    $150
  153. Zipp Stem 130mm
    $20
    Superior
  154. Zipp Stem 110mm
    $20
    Superior
  155. Michelin Pro 4 Endurance 25mm
    $20
    Superior
  156. MOST Tiger Alu TICR Stem 120mm
    $80
    Superior
  157. Pirelli P Zero Road TLR 28mm
    $20
    Superior
  158. Absolute Black 38t round chainring. 104 bcd
    $40
  159. Answer turquoise seatpost clamp, 31.8mm
    $10
    North Boulder
  160. Moots 31.8x110mm titanium stem
    $250
    North Boulder
  161. Hampsten custom road frame, 55cm
    $2,200
    North Boulder
  162. Brooks Bike Saddle B17S Leather
    $60
    Boulder, CO
  163. WTB SL8 Medium Steel Bike Saddle MTB bikepacking touring
    $35
    Boulder, CO
  164. NEW Continental Gatorskin bike tires 700x32
    $120
    Boulder
  165. Saris Bones 2 Bike Rack
    $50
    Longmont
  166. Revelate pogies
    $50
    North Boulder
  167. Cervelo SP24 Offset Carbon Seatpost
    $100
  168. Shimano Bike Cycling Shoes Mens 47 EU 2 bolt
    $40
    Boulder
  169. Bike Parts
    $1
    Boulder
  170. Walky Dog Bike Leash
    $10
    Gunbarrel/Niwot
  171. Walky Dog Plus bike leash
    $10
    Gunbarrel/Niwot
  172. Yakama SuperJoe3 Trunk Bike Rack
    $75
    Hygiene
  173. NEW - DT Swiss M1900 wheelset with NEW Maxxis Tires
    $590
  174. Rockymounts fork mount for Maverick Forks
    $20
    Boulder
  175. Bell Bike Helmet
    $15
  176. Kids MTB gear lot everything you need - shoes,shirts, gloves pand pads
    $75
    Boulder
  177. Shimano ME4 Trail SPD Shoes EU39
    $50
    Boulder
  178. Roof Rack, 52 inches, Fits up to 46" Spans between Raised Side Rails w
    $25
    Boulder
  179. Giro Privateer R Shoe size 44 10.25
    $40
    Boulder
  180. Mtn bike wheel set
    $20
    SE Boulder
  181. Campagnolo Chorus 10 Speed Shifter Set
    $150
  182. Campagnolo Chorus 10 Speed Shifter Set
    $150
  183. Specialized drop handlebar aluminum 38cm wide, 31.8 diameter.
    $15
    Erie
  184. 3T (TTT) Morphe drop handlebar, 40cm, 25.8mm diameter
    $30
    Erie
  185. Vintage ARAYA 27” x 1¼” Front Wheel, Shimano 36H Hub.
    $25
    Erie
  186. ENVE SES 3.4 AR DISC 700c wheelset
    $900
    Boulder
  187. Specialized eBike Front Rack and Adventure Plate
    $100
  188. New Fox Union BOA MTB Shoes--Olive Green Men's 10.5
    $105
    Boulder
  189. Shimano ME5 Men's MTB Shoes Size 10.5
    $60
    Boulder
  190. Troy Lee Designs Skyline Air MTB Men's Size XL Jerseys
    $15
    Boulder
  191. White Industries and Nox Composite Disc Gravel/CX 700c Wheelset
    $999
    Erie
  192. Campagnolo Record High Flange Hubset
    $275
    Boulder
  193. Nimble Fly Carbon Tubular Wheelset – Lightweight Aero – Made in USA –
    $450
    Lafayette
  194. HED 3C Carbon Tri-Spoke Rear Wheel – Tubular – with Valve Adapter Tool
    $400
    Lafayette
  195. THULE & SARIS BIKE RACKS FOR SALE
    $1
    Erie
  196. Thule Yepp Maxi - rack mounted kids seat
    $80
  197. Carbon Wheelset FSA K-Force Light AGX - 27.5 (650b)
    $395
    Boulder
  198. Shimano Di2 Remote Climbing Shifter
    $40
    Boulder - Longmont - Denver
  199. Shimano Ultegra Rear Derailleur 11 Speed
    $35
    Boulder
  200. Deda Zero100 Team Stem
    $55
    Boulder
  201. LOOK A-Stem
    $85
    Boulder - Longmont - Denver
  202. Bike Shipping, Storage Box
    $50
    Louisville
  203. Rockshox Reverb 175 wireless seat post
    $375
    Longmont
  204. Gravity Bike Rack
    $25
    Broomfield
  205. Hard case for bicycles with S&S couplings
    $200
    Broomfield
  206. GT Bravado Steel Frame
    $75
    Longmont
  207. DT Swiss 240s 650b gravel wheelset, new w tires
    $550
    Boulder
  208. Fabric Line-S Ti rail saddle
    $40
    Boulder
  209. New Surly Terminal Bar
    $60
    Boulder
  210. Shimano XT 2x11 group set
    $250
    Boulder
  211. Studded Bike Tires 700x35
    $50
  212. Ultegra FC-R8000 36 tooth chainring
    $10
    Longmont
  213. Abus 4750X Frame Cafe Lock
    $30
    Louisville
  214. Shimano Dura Ace RD-7700 9-Speed Rear Derailleur
    $30
  215. Fork Up - Cannondale Lefty Wheel Mount
    $15
  216. SRAM GXP Carbon Crank - Direct Fit chainrings
    $55
  217. Cannondale SI Spidering Plateau Chainring 32t - NEW
    $40
  218. Rocky Mountain 2010 Large ALTITUDE Frame For Parts / Extras
    $100
    Longmont
  219. New In Box SIZE 12!SPECIALIZED 2FO "Clip in " Enduro/ Dh shoes
    $40
    Longmont
  220. Rad Easy Mighty Rack
    $10
    Louisville
  221. Zipp stem
    $30
    Erie
  222. External PNW Pine Solo Dropper Post + PNW Puget MTB Dropper Lever
    $150
    Broomfield
  223. Moving Sale - Thule EasyFold XT Bike Rack for two bikes
    $450
    longmont
  224. Crankbrothers Eggbeater Pedals
    $20
    Longmont
  225. Marzocchi Dirt Jumper 2 Suspension Fork
    $150
    Lafayette
  226. Kinetic Road Bike Trainer
    $15
    Niwot
  227. Brand new WTB Riddler 700 x 45 tubeless gravel tires
    $60
    Boulder
  228. Brand New Maxxis Re-Fuse 700 x 32 Tubeless Road Tires
    $60
    Boulder
  229. Floor-to-ceiling 2-bike rack
    $25
    Broomfield
  230. BIKING SHOES 8W & 11.5M Shim $20/ TRAINER $20/ TAG ALONG $40/ xoearth
    $20
    Boulder
  231. HELMET FLAGS & reflective stickers 35/ BIKE TRAINER MagLit 20/ xoearth
    $35
    Boulder Central
  232. Sidi Dragon 3 Carbon MTB Size 44
    $50
    Louisville
  233. Car Bike Rack
    $35
  234. e13 Helix Race Boost alloy chainrings
    $15
  235. REI Junction pannier 22L
    $35
    boulder
  236. Two bike self standing wall rack
    $10
    Erie
  237. Sram Force Carbon Crankset Dub 1x12 175mm
    $120
    Boulder
  238. Stumpjumper Evo Alloy Frame S3
    $800
  239. Fox DPX2 Factory shox
    $250